Spray Foam Attic Insulation Vs Fiberglass

Spray foam attic insulation pros and cons.

Spray foam attic insulation vs fiberglass.

It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. Average cost of spray foam vs fiberglass insulation one board foot 12 x 12 x 1 of open cell foam insulation averages 0 45 to 0 80 cents the same amount of closed cell insulation costs between 1 and 2 a square foot of fiberglass costs between 1 30 and 3 50 on average fiberglass batts cost between 0 65 and 1 20 while a square foot of blown in fiberglass costs between 0 50. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary. Spray foam insulation the foam usually polyurethane is sprayed to fill cracks and gaps in the attic to form a hermetically sealed barrier.

Used in roughly 85 of american homes fiberglass insulation is the most common form of home insulation. Spray foam insulation drawbacks it is the most expensive option with costs running as high as two or three times as much as fiberglass batts or cellulose loose fill. Spray foam insulation for both types starts at about 1 50 per square foot and can cost more than 5 00 per square foot when a thick application is applied. Open cell spray foam insulation can expand up to 100 times its original size to fill every nook and cranny in the cavity where it is applied.

Synergy home performance explains the differences between traditional fiberglass and spray foam insulation. Few construction topics bore homebuyers more than insulation. I d blow insulation on the attic floor after air sealing of course. And you also know that properly insulating a home helps homeowners save money and makes houses more comfortable.

For instance a 5 5 inch wall cavity can be filled with 2 inches of foam and an r 13 fiberglass batt as a cost effective system that seals the walls with an r 25 insulation system exceeding u s. Fiberglass insulation vs spray foam insulation comparison. Spray foam provides the highest r value while open cell spray foam has about an r value of 2 2 to 3 5 per inch closed cell spray foam has about 6 7 per inch. The big disadvantage with spray foam is cost.

Fiberglass cellulose and foam dominate the conversation but the. You re well aware that heating and cooling account for roughly half of the energy used in the average home. Building pros of course know better. Fiberglass installation labor cost is about 1 00 to 2 75 per square foot based on the amount of insulation and the location.